Subject: Re: Interesting : Selecting unique value of an attribute From: Oliver Becker <obecker@xxxxxxxxxxxxxxxxxxxxxxx> Date: Wed, 23 Aug 2000 16:00:16 +0200 (MET DST) |
Hi Paul, > If I have, let say, a lot of empty elements "index" with a "entry" > attribute, and what I want to print is a sorted list of all the value entry > have in the document, but without having twice the same value ? > > <index entry="thing"/> blablabla <index entry="stuff"/> blabla <index > entry="this"/> > bliblabla<index entry="thing"/> bla bli bla<index entry="this"/> bli <index > entry="stuff"/> > <index entry="thing"/>and bla and bli <index entry="stuff"/> > > and I want to get: > stuff > thing > this Something like this: Define a key for every @entry of index: <xsl:key name="paul" match="index" use="@entry" /> Then walk through your index elements and choose only the first of each group (i.e. each key) <xsl:for-each select="index[generate-id()=generate-id(key('paul',@entry)[1])]"> now you have unique entries which need to be sorted: <xsl:sort select="@entry" /> Ok - here you are! Output, and that's all: <xsl:value-of select="@entry" /> The complete template is <xsl:template match="paul"> <xsl:for-each select="index[generate-id()=generate-id(key('paul',@entry)[1])]"> <xsl:sort select="@entry" /> <xsl:value-of select="@entry" /> <xsl:text>
</xsl:text> </xsl:for-each> </xsl:template> (Assuming your XML snipped is nested in a paul element ;-) ) Salut, Oliver /-------------------------------------------------------------------\ | ob|do Dipl.Inf. Oliver Becker | | --+-- E-Mail: obecker@xxxxxxxxxxxxxxxxxxxxxxx | | op|qo WWW: http://www.informatik.hu-berlin.de/~obecker | \-------------------------------------------------------------------/ XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
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